DP8 Memory leak.

Discussion in 'OS X Yosemite (10.10)' started by iMacDragon, Sep 26, 2014.

  1. iMacDragon macrumors 68000


    Oct 18, 2008
    Just noticed that WindowServer is using 33GB of memory! ( 33GB of it compressed, and swap file at 9GB ) definitely a tiny memory leak there somewhere..
  2. matreya macrumors 65816


    Nov 14, 2009
    Interesting, I've been up for almost 11 days with DP8 and WindowServer is just using 298.7MB...
  3. Julien macrumors G4


    Jun 30, 2007
    This is an ongoing problem and most don't realize it until they get a spinning beach ball. They just wait it out or kill it not knowing the App is eating huge amounts of memory. It can be almost any App and usually the one your are using the most.

  4. Spytap macrumors member

    Oct 8, 2010
    DP8. Uptime: 4 hours.

    Windowserver: 4.4GB Memory, 3.86 GB compressed Mem

    No idea if this is normal, but it feels excessive.
  5. iMacDragon thread starter macrumors 68000


    Oct 18, 2008
    yeah, that's definitely leaky somewhere. I presume window server is where all the graphics loaded for displaying UI are loaded into. So something isn't freeing it's assets correctly, or window server itself is buggy. Hard to say.
  6. AppleWindowsFan macrumors member

    Nov 13, 2013
    Ohio USA
  7. chrfr macrumors 604

    Jul 11, 2009
    Windowserver is basically the interface you see when you use the computer.
  8. leman macrumors G3

    Oct 14, 2008
    You are correct, its the process that manages the UI display and user interaction (basically what X11 is on most unix system).

    On the other hand, I've been running Yosemite since July and I have never noticed any memory leaks. In fact, Mavericks used consistently more RAM both for kernel task and window server. My current DP8 uptime is over 2 days and there are no issues.

    Maybe people with issues could share their hardware specs here? It might be a leaky GPU driver.
  9. iMacDragon thread starter macrumors 68000


    Oct 18, 2008
    2012 RMBP here, so most of time on intel hd 4000. Not sure how to best try and identify if it's a particular program or not, as it's a fairly slow leak over time.
  10. Spytap macrumors member

    Oct 8, 2010
    Update: DP8. Uptime at about 24 hours:

    Windowserver: 8.01 GB memory, 7.82 GB Compressed memory.

    It climbed up another .01 while I was typing this as well.
  11. Ritsuka macrumors 6502a

    Sep 3, 2006
    That's definitely a bug. You should report it to Apple.
  12. Spytap macrumors member

    Oct 8, 2010
    At 8.5 GB of Memory used for Windowserver, my computer became unresponsive enough that I needed to restart. Window server currently using 60 MB. Reporting to Apple.
  13. Tubamajuba macrumors 68020

    Jun 8, 2011
    Done with MacRumors, the trolls have won
    My WindowServer process uses a consistent 120-125 MB. I also have a 63 MB image as my desktop background, don't know if that has anything to do with it.

    I did experience a memory leak in Safari on an earlier DP that caused one of the processes to use 12 GB of RAM, but that seemed to be happening on only one site.
  14. bkribbs macrumors 65816

    Jan 15, 2012
    I assume this might be the problem that has made my computer freeze and reboot several times now? I'm on PB3 though.
  15. mrt209 macrumors 6502

    Nov 21, 2010
    I am having the same issue. Also having issues with spotlight (mds and mdworker generating error messages every second).
  16. MikhailT macrumors 601

    Nov 12, 2007
    Guys, go to the System Preferences > Accessibility > Display and check Reduce transparency, that should fix the problem. It does for me.

    Windowserver on Yosemite is horrible. I filed a bug report that it is using more CPU than in the past. They responded saying it is intentional because of the new UI resources on Yosemite and they'll keep optimizing it over time to use less CPU.

    I'm very sadden that Apple thinks it is okay to use more CPU to draw the new interface. By the way, it's averaging 10-20% of quad core 2.66Ghz i7 ALL THE TIME.

    This is going to be the first OS X version where I'm going to start turning off the UI effects to make it work right. Just like iOS 7 and 8. You'd think Apple would at least use the GPU instead.

    If this did fix the problem for you guys, keep filing bug reports with Apple to convince them to change their minds.

    Look at the activity monitor and see if it is leaking over time. It shouldn't use more than 100mb as it doesn't for me without transparency enabled.
  17. bkribbs macrumors 65816

    Jan 15, 2012
    Mines running at 267 right now. How much is kernel_task or whatever usually using? I'm up to a gig and change there. Thanks for the advice. I really like the transparency but I can't have my computer freezing. Thanks for the advice.
  18. leman macrumors G3

    Oct 14, 2008
    I also have a 2012 rMBP here and no signs of a leak, so I would guess that its either a buggy app of a messed up installation on your sight.

    The higher CPU usage is likely due to aggressive optimisation of scrolling performance (they make the apps predraw the areas they are estimated to scroll to, to have smooth scrolling experience). That said, I don't see any issue with that, after all, it improves the user experience without taking any needed resources from the system

    This is clearly a bug (again, either with a particular app or with you installation). Mine (2012 rMBP) is under 1% most of the time, unless I am actually scrolling some content.
  19. MikhailT macrumors 601

    Nov 12, 2007

    If it is a corrupted install, Apple would've tell me as I've sent them the entire sysdiagnose log. They say it's fine and it is normal to see 10% all the time used up by WindowServer.

    Also, smooth scrolling was enabled back in Mavericks, not Yosemite. I had zero problems on Mavericks, it only become a problem with Yosemite DP5. It worked fine from DP 1-4.

    I'm not the only one seeing the problem, my co-workers saw the same exact issues on their '13 rMBP and one '12 rMBP I believe like mine.

    By the way, it does take my system resources when I actually end up using more than 90% of the CPU, the system started freezing. The moment I turned off transparency, everything was smooth even at above 90%.

    Don't forget that the CPU isn't the only issue here, the memory leak jumped several GB when it is enabled. That's not acceptable in any shape. The transparency doesn't justify these resources, maybe if it was using my GPU instead of CPU, that'd be fine.


    1.2GB of memory here, I believe it's normal as it's always takes up as much as it can to do all of the OS tasks.
  20. tonglil macrumors newbie

    Mar 30, 2011
    Uptime: 3 days 8 hours.

    Not much use over most of the days, with it just forgot to sleep (via caffine) while I was at work.

    Attached Files:

  21. grahamperrin macrumors 601


    Jun 8, 2007
    Compressed memory measurements appear illogical

    Release or pre-release?

    Which build of the OS?

    If you run the OS in safe mode with comparable use of apps for the same length of time, are the amounts used by WindowServer similar to what's in the screenshot?

    Incidentally, that's apparently less than twenty percent of real memory used by the process.

    Also, the total compressed memory is relatively low (953.1 MB); compressed memory for that one process – 15.04 GB – appears to be greater than the total for all processes.

    An appearance bug and/or measurement bug? I wonder.

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